Testing-machine.



PATENTED MAY 30', 1905'.

n H. J. NICHOLS. TESTING MACHINE.

APPLICATION FILED APR.15. 1904.

2 SHEETS-SHEET 1.

,lll/Illini PATNTBD 'MAY so, 1905A. H. J. NICHOLS.

TESTING MACHINE. APPLICATION FILED APB.. 15, 1904.

2 SHEETS--SHEET 2.

' UNITED STATES Patented May 3o, 1905i 'PATENT OEEICE.

' HENRY J. NICHOLS, orl WESTEIELD, MASSACHUSETTS.

TESTING-MACHINE,

SPECIFICATION forming part of Letters'latent No. 791,282, dated May 30, 1905.

v -Application iled April 15, 1904. Serial No. 203,314.

To all whom z3 rrr/ay concer-71,:

- Be it known that I, HENRY J. NICHOLS, a citizen of the United States, and a resident of wWestfield, in the county of Hampden and State of Massachusetts, have invented-a certain new and Improved `Testing-Machine, of which the following is a specification.

- My invention relates to a machine more especially adapted for testing tubes; andthe object of my invention is to provide'a device by means of which a tube, as a gun -,barrel, may be tested for the purpose of truing up by the aid to a great extent of mechanical means; and a further object of the invention is to provide a device by means of which a tube, as a gun-barrel, may be expeditiously' -and accurately tested.

A form of device by the use of which the above objects maybe attained is illustrated in the aocompanyngdrawings, in which- Figure 1 1s a view in front elevation of a machine embodying my Invention. Fig. 2 1s a detail view infsection through a portion of said machine and showing a gun-barrel in place. Fig. 3 is a detail view, on .enlarged scale, in vertical section, through the headstock. Fig. 4 isa top or plan view of the head-stock. Fig. 5 is a detail view, in vertical Section, through the machinevon the line indicated in Fig. 1. Fig. 6 is a detail view,

on enlarged scale, in longitudinal section,4

through the indicator-support. Fig. 7 is a detail view, on enlarged scale, in cross-section, through the indicating device, showing the pointer or indicator in abnormal position. Fig. 8 is a like view showing the pointer or indicator in its normal position. Fig. 9 is a detail view in cross-section through ,the indicator-support and indicator, showinga modified lform of the invention.

In the accompanying drawings the numeral same manner as in the head-stock.

lthe head -stock and through the base, the

lower end of thebolt being suitably headed,

'and a nut 7 is employed for clamping the parts in place. The lower portion of the `head-stock may be suitably formed to prevent lateral movement on its base or support .and in any well-known manner common to devices of this class. The upper part of the head-Stock has a shouldered recess 8, in which 'islocated a center bushing 9 for a center 10.

The bushing is enlarged at that end towardv the center of the machine, and the opposite end extends through an opening 11 from the der formed between the reduced and enlarged, portions of the bushing. .accurately fitted within the bushing 9, this The center 10 is which is located avcenter bushing 16 for the reception of a center 17. The construction of this center and bushing is much the same as that above described with relation to the center and bushing of the head-stock, except-that in the present instance the bushing may be fixed within the tail-stock or movable in the Each of the centers is tapered, as at 18, for the reception of a barrel v19, which is to be-operated upon. 1

The straightener 4 includes a straightenerbase 21, which is supported on the base 1 and constructed to have a movement therealong, the base being provided with any suitable, means, as a boss 22, for preventing lateral. movement of the base. This base is'preferably freely slidable along the base of the machine and may have devices, -as shown, f or IOO and is rotatable therein.

clamping it in any desired position when required. A support 23 projects upward from the base, and in'` this support is mounted a shaft 24, to which are secured a bending-lever 25 and a gear 26. In an opening 27, extending through the support, is mounted a plunger 28, having a rack 29 in mesh with the gear 26. The front end of the plunger is adapted to engage a gun-barrel 19, and the lever is employed to exert a pressure upon the barrel to remove any bend which may exist therein.

The intermediate supports 5 may be located between the head and tail stocks and the straightener. These su pports may consist of a basesimilarly formed as that hereinbefore described with relation to the head and tail stocks and the straightener, being provided with similar means for preventing lateral movement and for clamping them in position. Each of these supports may have a recess 30, within-Which the gun-barrel may be located.

An indicator-bar carrier 31 is adapted to be loeated'in the openings through the bushings 9 and 16 and also through the centers l() and 17 and the gunbarrel supported thereon. This carrieris provided at one end with an indicator grooveor recess 32, in which is secured indicator-bar bushings 33. An indicator-bar 34 is located within these bushings One end of the indicator-bar is bent or extended to form a pointer orindicator 35, located near the-end of the indicator-tube, and the oppositeend of the indicator-bar is bent or extended to form a linger 36', which is adapted to rest against a feeler that is adapted to make contact with the inner surface of a gun-barrel supported in the machine. The feeler 36a extends through the wall of the carrier into the groove, its inner end lying loosely againstl the finger 36. A spring 37 is located within the groove in the carrier,with one end pressing against the inger36, as shown inA Figs. 7 and 8 of the drawings, in a manner to hold the feeler 36n with its outer end pressing against the inner wall of the gun-barrel 19.

A dial 38 is supported on the end of the carrierv 31, the hub 39 lof the dial having a setscrew 40 projecting through the hub and against the carrier for the purpose of holding the dial in any position of adjustment. This dial is provided with suitable graduations, in connection with which the pointer or indicator 35 is operated. In the preferred formof the invention, as shown herein, the zero-mark of the scale is located in the center of the dial, and the graduations are numbered from zero upward both to right and left of the zero-mark. rlhe opposite end of the indicater-bar carrier is provided with a guidegroove 4l, in which is located a guide-pin 42, projecting through the head-stock 2 and bushing located therein, the end of the pin resting inr the groove and-preventing rotary at 52, to the hub of the dial 38.

advantage.

movement of the carrier, but allowing free lengthwise movement thereof.

A standard-44 is located at any desired distance from the base of the machine, and an indicator-bar sleeve 45 has one end supported in a recess in the standard and its opposite end in the tail-stock 3. The hub 39 of the dial has a sliding fit within this sleeve, which is slotted at its upper side to permit passage of the dial 38 and the pointer or indicator 35. A pulley 46 is rotarily mounted on the standard 44, and a pulley 47 is also rotarily mounted on the tail-stock 3. llhe pulley7 46 is mounted in a bracket 48, extending from thc standard 44, and this bracket may be provided with adjusting-screw 49, fitting the screw-threaded surface of thebracket. Theindicator-har sleeve is also provided with a slot 50, in which a belt 51 projects, this belt passing around the pulleys 46 and 47 and being secured, as The pulley 47 may be provided with a handle for the purpose of turning the pulley, and thus moving the indicator-bar carrier lengthwise of the machine. As shown herein, the indicatorbaris located at one side of the center of the indicator-bar-carrier; but while do not intend to limit my invention to this location ol the indicator-bar it will be found of especial With the indicator-bar and carrier thus relatively located the force required to rotate the indicator-bar may be utilized to the greatest advantage, this force heilig applied to the bar through a member located at an angle (preferably at about forty-live degrees) to a vertical and a horizontal line. 'lhe dial 38 and the pointer are so arranged that with the indicator-bar and the part immediately connected thereWith,to which power is applied, located in this position the pointer shall register with the zero-mark on the dial. It will thus be seen that the gun-barrel and the indicator-barcarrier both being centered on the-centers'lO and 17 if the gun-barrel is true at the point of contact of the feeler 36, the feeler will touch the inner surface of the gunbarrel at such point that the pointer or indicator will register with the zero-mark on the dial. If, however, the gun-barrel shall be bent at the point of Contact of the feeler with thc'barrel and the bend shall be in a downward direction, the pointer will be thrown to the right from the zero-mark as one faces the dial, (see Fig. 7;) but if the barrel he bent in the opposite direction then the pointer or in-l that ljust above described be placed inthe ma# chine, the feeler 36b will of coursefbethrown outward to a greater or less degree, and the pointer would therefore'be moved to the right or left of the lzero-mark. In order to cause the pointerk or indicator to register with the zero-mark, the adjustment of the dial ,on the indicator-tube is provided. This'will adapt the machine and the same indicator-bar carrier and indicator-bar for use with barrels of dierent sizes. The intermediate supports maybe provided withr a screw-threaded plunger 53, on the lower end of which is loosely and rotarily locateda rest 54. A handwheel '55 may be employed to locate the rest in any position with reference to a gun barrel or tube placed. in thelmachine. y

In Figs. 7 and 8 ofthe drawings the feeler, whichmakes contact with the inner surface of the gun-barrel, is shown as loosely con `nected with the indicator-bar-that is, lit Ais 'in the form of a pi-n which rests with its inner end against the finger 36. In the modified form of the device (shown in Fig. 9 of the drawings,) this feeler is rigidly connected 'with the indicatorbar and consists of a projection bent at a proper Aangle and formed to (Shown to a vertical and a horizontal line. y

While my invention has been shown and described .herein with special Yreference to a machinefor straightening gun-barrels, in con- :nection with which itfinds ready application,

it will be obvious that it -might be extended to varied uses,.and I `do not vdesire tolimitV myself to theapplication as hereinshown' and described.

What `I claim as my invention, and desire to secure by VLetters Patent, is-

l. In combination with a support for a tube,

an indicator-bar wholly supported independ ently of but projecting throughthe bearing of and'within thetube, a feelerconnected with the indicator-bar within the tube,and an indicator connected with the indicator-bar outside of the tube.

2. In combination with supports for eachend of a tube, an indicator-bar wholly supported independent of but projectingv within the tube, a feeler connected with the indicator-bar within the tube, and an indicatorv located outside of the tube and connected with the indicator-bar. v

3. In combination with end supports for a tube, an indicator-bar projecting through one of said supports into but supported independent of the tube, afeeler connected with the indicator-bar within the tube, and an indicator.

located-'outside ofthe tube 'and connected with the yindicator-bar. H j I 4, In combination-with a support for a tube,

an indicator-bar vwholly supported independ- 6. In a testing-machine, supports 'for the ends of a barrel, an indicator-bar independently supported and projectingthrough a support, a feeler to be located in the barrel and connected with the indicator-bar and operated by Contact with the inner surface'of the barrel, a pointer connected with the indicator'- bar'outside of th'e barrel, and a dial to operate in connection with the pointer.

7. In'a testing-machine@ support for a gunbarrel, an indicator-bar carrier to project at each end -of said barrel, means for sustaining each end of theindicator-bar carrier, an indicator-bar mounted in the carrier, afeeler operated by contact with the inner surface of the vbarrel and loosely connected with the indicator-bar, and an indicator locatedoutside of the barrel and connected with the indicator-bar.

8. `In atestingmachine, ahead and tail stock to support each end of a barrel, an indicatorbar-carrier mounted in the headand tail stock,

-an indicator-bar mounted in the indicator-bar carrier, a feeler mounted in the indicator-barcarrier to operate in connection with the 1nner surface of a barrel and loosely connected ywith the indicator-bar, an index-pointer con.

nected with the indicator-bar outside of the barrel, and a dial mounted on the indicator' bar carrier adjacent to said pointer.

9. In a testing-machine, a head and atail stock, centers for a gunfbarrel supported on said stocks, an indicator-bar carrier mounted at each end in a stock, and projecting through said centers, an indicator-bar mounted within the indicator-bar carrier, a feeler to be located within the barrel and connected with the indicator-bar, and indicating devices located outside of the barrel and appurtenant to one of said stocks.

10. In'a testing-machine, a base, head and tail stocks mounted on the base, a center mounted in one of said stocks, a center mounted in and movable-longitudinally in the other stock, an indicator-bar carrier having each end extending through one of said stocks, an indicater-bar" mounted in the indicator-bar carrier and projecting through one of said cen- "I OO ters, a feeler connected With the inner end of the indicator-bar, a' dial located on the indicator-bar carrier, and an indicator-pointer coneclted with the indicator-bar adjacent to said 11.A In a testing-machine, supports for the ends of a tube, an indicator-bar projecting through a support, a feeler to be located in the tube to operate by contact with the inner surface of the tube and connected Withthe indicator-bar, a sleeve having a bearing for the indicator-bar and with one. end attached to the support, a pointer connected with the indicator-bar outside of the barrel, and a-dial to operate in connection with the pointer.

12. 'In a testing-machine, supports for the ends of a tube, an indicator-bar projecting through a support, a feeler to be located in the tube to operate by contact with the inner surface thereof and connected with the indieator-bar, a sleeve having a bearing for the indicator-bar and with one end attached to the support, and an indicator located outside the tube and connected with the indicator-bar.

13. In a testing-machine, supports for the ends of a tube, a sleeve having one end attached to a support, an indicator-bar mounted in the sleeve and projecting through the support, a 'eeler to be located in the tube and connected with the indicator-bar, and an indicator connected with the indicator-bar and located outside of the tube.

14. In a testing-machine, supports for the ends of a tube, a sleeve having one end attached to a support, an indicator-bar carrier projecting through the supports and mounted in the sleeve, an indicator-bar mounted in the indicator-bar carrier, a feeler connected with the indicator-bar to be located Within the tube, and an indicator located outside of the tube and connected With the indicator-bar.

15. In a testing-machine, supports for the ends of a tube, a sleeve having one end attached to a support, an indicator-bar carrier located concentrically With and supported in the end supports and with one end resting in said sleeve concentric therewith, an indicatorbar eccentrically mounted in the indicator-bar carrier,'a feeler connected with the indicatorbar to be located within the tube, and an indicator connected with theindicator-bar to be located outside of the tube.

16. In combination with a support, an indicator-bar mounted to rotate in the support, a projection from one end ofthe indicator-bar located radially thereof to transmit power thereto, an index-hand connected with and located radially of the opposite end of the indicator-bar, and a dial appurtenant to the index-hand.

17. In combination with a support, an indicator-bar carrier mounted on the support, an indicator-bar rotatably mounted in the indicator-bar carrier, a projection extending radially from one end of the indicator-bar, :in index-linger connected with and projecting` radially from the opposite end oi the indicator-bar, and a dial located appurtenant tothe index-linger.

18. In combination with a support, a rotatable indicator-bar, a projection extending radially from one end ofthe indicator-bar to transmit power thereto, an index-hand projecting radially from the opposite end oi the indicator-bar, and a dial located appurtenant to the indicator-bar.

19. In combination with a support, an indicator-bar carrier mounted on the support and having a lengthwise groove, blocks located within the groove, an indicator-bar mounted in said blocks, a projection extending radially from one end of the indicator-bar, an index-hand projecting radially from the opposite end of the indicatorbar, and a dial located appurtenant to the index-hand.

20. VIn combination with a support, an indicator-bar carrier mounted on the support, an indicator-bar eccentrically mounted to rotate in said carrier, an indicator-feeler connected with one end of thc indicator-bar, an index-hand connected with the opposite end of the indicator-bar, and adial located appurtenant to the index-hand.

HENRY J. NICHOLS.

Witnesses:

ARTHUR B. JENKINS, CoRA M. A'rwoon. 

